How to iterate & retrieve values from NSArray of NSArrays of NSDictionaries
- by chinjazz
I'm stumpped on how iterate and get values for an Array of Arrays of NSDictionaries (different classes/entities). Here's what I'm currently doing:
1) Constructing two separate arrays of NSDictionaries (different entities)
2) Combining both arrays with:
NSMutableArray *combinedArrayofDicts = [[NSMutableArray alloc] initWithObjects: sizesArrayOfDicts, wishListArrayOfDicts , nil];
3) Then archive combinedArrayofDicts :
NSData *dataToSend = [NSKeyedArchiver archivedDataWithRootObject:combinedArrayofDicts];
4) Transmit over GameKit
[self.session sendDataToAllPiers:dataToSend withDataMode: GKSendDataReliable error:nil];
5) How would I manage traversing thru this array on the receiving end? I want to fetch values by for each class which is key'ed by classname:
Here's how it looks via NSLog (2 Sizes Dicts, and 1 Wishlist Dict)
Printing description of receivedArray:
<__NSArrayM 0xbc65eb0>(
<__NSArrayM 0xbc651f0>(
{
classname = Sizes;
displayOrder = 0;
share = 1;
sizeType = Neck;
value = "13\" or 33 (cm)";
},
{
classname = Sizes;
displayOrder = 0;
share = 1;
sizeType = Sleeve;
value = "34\" or 86 (cm)";
}
)
,
<__NSArrayM 0xbc65e80>(
{
classname = Wishlist;
detail = "";
displayOrder = 0;
imageString = "";
latitude = "30.33216666666667";
link = "http://maps.google.com/maps?q=loc:30.332,-81.41";
longitude = "-81.40949999999999";
name = bass;
share = 1;
store = "";
}
)
)
(lldb)
In my for loop I'm issuing this:
NSString *value = [dict objectForKey:@"classname"];
and get an exception:
* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSArrayM objectForKey:]:
unrecognized selector sent to instance 0xbc651f0'
Is this frowned upon as far as mixing object types in arrays of arrays?
